Miter-box.



J. L. .PRIN'GLR MITER BOX.

APPLICATION PILED'OOT. 27, 1905.

Patented Oct.' 20, 1908.

JOHN L. PRINGLE, OF NEW BRITAIN, CONNECTICUT.

MITER-BOX.

Specification of Letters Patent.

Patented Oct. 20, 1908.

Application filed October 27, 1905. Serial No. 284,642.

To all whom 'it may concern:

Be it known that I, JOHN L. PRINGLE, a subject of the King of Great Britain, and residing at New Britain, in the county of Hartford and State of Connecticut, have invented a new and Improved Miter-B0X, of which the following is a specification.

My invention relates more especially to that class of miter boxes which may be re duced to compact form when not in use, and the object of my invention is to provide a device of this class in which a cut may be made at different angles through the work both crosswise and depthwise thereof with the employment of a single guide. Devices in the use of which this object may be attained are illustrated in the accompanying drawings, in which- A Figure l is a top or plan view of a miter box embodying my invention. Fig. 2 is a view in front elevation thereof. Fig. 3 is a view in cross-section through the box with the upper edges of the bed broken away. Fig. 4: is a perspective view illustrating the construction of the saw guides. Fig. 5 is a detail view in lengthwise section through a portion of a device showing a slightly modified form of the invention.

My improved saw guide finds ready application in a structure including a single backrest against which the work is placed in the sawing operation as distinguished from a box-like structure within which the work is placed, although I contemplate its use with other forms of construction.

In that form of the device illustrated herein in Figs. l, 2, and 3 the bed consists of two parts, 1 and 2 extending from opposite sides of an upwardly extending back-rest 8. This backsrest may have its lower edge located between the two portions of the bed,.

as shown in Fig. 3 of the drawings, but the relative arrangement of the edges of the back-rest and bed may be changed as desired and any means of securing the backrest to the bed may be employed. The backrest includes two members, 3a and 3b, having an angularly shaped opening 4: therebetween, as shown in Fig. 2 of the drawings.l This opening is in the form of an inverted V, the sides or edges Vextending preferably at rightangles to each other, enabling a cut at an angle to the plane of the bed to be made in a piece of work.

- The saw guide proper includes two bases 5 and 6, each pivotally mounted on the upper edge of the back-rest. These bases may be mounted in various ways. As shown in Figs. l and 2, the base 5 has a circularly formed slot 5a in which a pivot 7 is located. This pivot is preferably headed and forms a guide to control the sliding movement of the base as well as a pivot on which it may turn. The base 6 has a pivot 6aL securing it to the top of the back-rest. It will be noted that by means of the circular slot 5a and pivot 7 the base 5 may be moved on the back-rest in a direction lengthwise thereof and toward or away from the base 6, this pivotal mount of the bases enabling the guides to be located in proper position for the production of an angular cut in a piece of work in a vertical plane. The wings 8 forming the saw guide proper are pivoted to the bases 5 and 6, as shown in Fig. 4 of the drawings, and each of the wings has an arm 9 projecting through a socket 10 having a clamp screw l1 by means of which the wings may be secured in various positions of adjustment. The bases 5 and 6 may be secured in various positions in their swinging movement across the edges of the back-rest. As shown in Figs. 1 and 2, the base 6 is provided withnotches 14 engaged by a spring locking bolt 15 operated by a spring 16 to secure the base in any-de sired position of adjustment. The base 5 may be limited in its swinging movement by contact with the base 6, its manner of connection with the baclcrest, however, enabling it to be located sufliciently far from the base 6 to allow a saw to have a free sliding movement between the wings.

Additional means of adjusting the position of the base 5 with respect to the base 6 may be employed, these consisting of a slide 12 mounted in a recess in the upper edge of the back-rest and having a limited sliding movement therein. A bolt 13 with its head located in a pocket 16a projects upward through a slot 17 in the slide, and a clamp screw 18 is employed to secure the parts in position. This means of changing the relative position of the bases 5 and 6 may be alone employed, or the means hereinbefore described consisting of the stud 7 and circular slot 5L may be employed alone, or the two may be used conjointly. This means of varying the relative positions of the two basesvis necessitated in changing the wings from a vertical position to a position obllO liquely thereto in order to preserve the proper distances between the wings. This may be accomplished by the devices hereinbefore described, or as shown in F ig. 5, the member 3d of the back-rest, corresponding to the member 3a of Figs. l and 2, may be separately formed, and that member 3C of the back-rest corresponding to the member 3b of Figs. l and 2 may be provided with an extension 3 extending j the full length to which the member 3d of the back-rest is secured. In this construction of the parts the base a, similar to the base 5 shown in Fig. l, is pivoted on the upper edge of the part 3d of the back-rest, this base having a circular slot c, the same as shown in F ig. 1. A bolt l extends depthwise through the back-rest 3d into a slot c in the base 3e. A bolt f extending through the portion 3 of the back-rest serves as a pivot on which the base a turns. In this construction of the parts it will be noted that the position of one saw guide is varied with respect to the position of the other by moving the member 3d of the backrest and the saw guide carried thereon. An advantage is present in this form of construction from the fact that the laterally eX- tending parts forming the bed and also serving as a support for the work being sawed may be dispensed with. The work is supported directly upon a bench or like part to which the device is secured as by Ameans of screws passing through screw holes g formed in the extension 3e. The lower edge of the back-rest in this instance forms the bed of the device, the securing means maintaining the structure in an upright position, whereas in the device shown in Figs. l, 2 and 8 the bed includes the parts 1 and 2 which support the device in an upright position while at the same time supporting a piece of work to be operated upon.

I do not limit myself to any specific means for uniting' the back-rest to the bed, and any preferred form of securing said parts may be employed.

What l claim as my invention and desire to secure by Letters Patent is 1. A bed and a back-rest, a saw guide including two separate members each pivotally secured to the upper edge of the rest, means for swinging said members in a horizontal plane, and means for securing them in. different positions of adjustment.

2. A bed and a back-rest, a saw guide secured to the upper edge of the rest and including two bases pivotally mounted to swing in a horizontal plane on the rest, and a wing secured to each base and each swinging on a horizontal pivot.

3. A bed and a back-rest, a saw guide including two bases mounted to swing in a horizontal plane on the rest, means for securing said bases in different positions of adjustment, a wing' secured to each base and swinging on a horizontal pivot, and means for securing each of the wings in diliierent positions of adjustment.

t. A bed, a back-rest supported thereby, an opening in said back-rest gradually widenng from the top downward, a saw guide mounted adjacent to said opening and consisting of two bases pivotally mounted to swing in a horizontal plane on the upper edge of the rest, a wing secured to each base to swing on a horizontal pivot, means for securing the wings in different positions of adjustment, and means for varying the distance between the two members of the guide.

5. A bed, a back-rest supported thereby, an opening depthwise through the back-rest, a saw guide mounted adjacent to said opening and including two bases pivotally mounted on the edge of the back-rest to swing in a horizontal plane, wings secured to the bases to swing on a horizontal pivot, means for sliding the base of a saw guide toward and from the other base, and means for securing said base against sliding movement.

G. A bed, a back-rest supported thereby and having an opening depthwise thereof, a saw guide mounted adjacent to said opening and including two bases pivotally mounted to swing in a horizontal plane on the upper edge of said rest, wings secured to said bases to swing on a horizontal pivot, means for securing the wings in different positions of adjustment, means for slidably supporting one of the saw guide bases, and means for securing said base against sliding movement.

7. A back-rest including one section having at its lower edge a lengthwise extension forming a base of a width not greater than the thickness of the back-rest, and another section of the back-rest secured to said eX- tension.

8. A back-rest including one section having at its lower edge a lengthwise extension forming a base of a width not greater than the thickness ot' the back-rest, and another section of theYback-rest adjustably secured to said extension.

9. A bed including an extension from a back-rest, the back-rest supported by said bed and including a part rigid therewith and a part movably secured thereon, a saw guide mounted on the upper edge of the back-rest and including bases pivotally mounted on the back-rest and wings mounted on a horizontal pivot, means for adjusting the position of one base with respect to the other, and means for securing the movable portion of the back-rest.

l0. A bed including an extension from a back-rest, the back-rest including a portion rigid with the bed and a portion movable thereon, means for adjustably securing the rmovable portion with respect to the fixed I portion, and a saw guide mounted on the upper edge of the back-rest.

11. A bed including an extension from a portion of a back-rest, the back-rest ineludng a part rigid with said bed and a part movable thereon, means for adjustably securing the movable part to said bed, a Saw guide including two bases pvotally mounted on the upper edge of the back-rest, and wings mounted on a horizontal pivot on said bases.

12. A bed and a back-rest, a saw guide including two separate members each pvot ally secured to and independently movable on the upper edge of the back-rest, means for swinging said members n a horizontal plane, and means for varying the space between the members of the saw guide.

JOHN L. PRINGLE. Vitnesses:

I ARTHUR B. JENKINS,

LENA E. BERKovrroH. 

